Q: Azotobacter and Clostridium convert
(a)gaseous molecular nitrogen into ammonia
(b)ammonia present in soil to gaseous nitrogen
(c)humus present in soil to mineralized constituents
(d)normal healthy soil to toxic soil
Correct Answer: (a)
The correct answer is (a) 'gaseous molecular nitrogen into ammonia'. This question from the Geography domain tests knowledge of Economic & Mineral Geography.